/*
 * $Id: BasicTaskPaneContainerUI.java 3475 2009-08-28 08:30:47Z kleopatra $
 *
 * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
 * Santa Clara, California 95054, U.S.A. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
package org.jdesktop.swingx.plaf.basic;

import java.awt.LayoutManager;

import javax.swing.JComponent;
import javax.swing.LookAndFeel;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.UIResource;

import org.jdesktop.swingx.JXTaskPaneContainer;
import org.jdesktop.swingx.VerticalLayout;
import org.jdesktop.swingx.plaf.LookAndFeelAddons;
import org.jdesktop.swingx.plaf.TaskPaneContainerUI;

/**
 * Base implementation of the <code>JXTaskPaneContainer</code> UI.
 * 
 * @author <a href="mailto:fred@L2FProd.com">Frederic Lavigne</a>
 * @author Karl Schaefer
 */
public class BasicTaskPaneContainerUI extends TaskPaneContainerUI {
	/**
	 * A {@code UIResource} implementation of {@code VerticalLayout}.
	 * 
	 * @author Karl George Schaefer
	 */
	protected class VerticalLayoutUIResource extends VerticalLayout implements UIResource {
		/**
		 * The default layout.
		 */
		public VerticalLayoutUIResource() {
			super();
		}

		/**
		 * Defines a layout with the specified gap.
		 * 
		 * @param gap
		 *            the gap between components
		 */
		public VerticalLayoutUIResource(int gap) {
			super(gap);
		}
	}

	/**
	 * Returns a new instance of BasicTaskPaneContainerUI.
	 * BasicTaskPaneContainerUI delegates are allocated one per
	 * JXTaskPaneContainer.
	 * 
	 * @return A new TaskPaneContainerUI implementation for the Basic look and
	 *         feel.
	 */
	public static ComponentUI createUI(JComponent c) {
		return new BasicTaskPaneContainerUI();
	}

	/**
	 * The task pane container managed by this UI delegate.
	 */
	protected JXTaskPaneContainer taskPane;

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void installUI(JComponent c) {
		super.installUI(c);
		taskPane = (JXTaskPaneContainer) c;
		installDefaults();

		LayoutManager manager = taskPane.getLayout();

		if (manager == null || manager instanceof UIResource) {
			taskPane.setLayout(createDefaultLayout());
		}
	}

	/**
	 * Installs the default colors, border, and painter of the task pane
	 * container.
	 */
	protected void installDefaults() {
		LookAndFeel.installColors(taskPane, "TaskPaneContainer.background", "TaskPaneContainer.foreground");
		LookAndFeel.installBorder(taskPane, "TaskPaneContainer.border");
		LookAndFeelAddons.installBackgroundPainter(taskPane, "TaskPaneContainer.backgroundPainter");
		LookAndFeel.installProperty(taskPane, "opaque", Boolean.TRUE);
	}

	/**
	 * Constructs a layout manager to be used by the Look and Feel.
	 * 
	 * @return the layout manager for the current Look and Feel
	 */
	protected LayoutManager createDefaultLayout() {
		return new VerticalLayoutUIResource(14);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void uninstallUI(JComponent c) {
		uninstallDefaults();

		super.uninstallUI(c);
	}

	/**
	 * Uninstalls the default colors, border, and painter of the task pane
	 * container.
	 */
	protected void uninstallDefaults() {
		LookAndFeel.uninstallBorder(taskPane);
		LookAndFeelAddons.uninstallBackgroundPainter(taskPane);
	}
}
